GB2031254A - Creation of Inventions and Patents with Artificial Intelligence

GB2031254A – Drip or trickle emitter for irrigation purposes
– Google Patents

GB2031254A – Drip or trickle emitter for irrigation purposes
– Google Patents
Drip or trickle emitter for irrigation purposes

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Publication number
GB2031254A

GB2031254A
GB7931107A
GB7931107A
GB2031254A
GB 2031254 A
GB2031254 A
GB 2031254A
GB 7931107 A
GB7931107 A
GB 7931107A
GB 7931107 A
GB7931107 A
GB 7931107A
GB 2031254 A
GB2031254 A
GB 2031254A
Authority
GB
United Kingdom
Prior art keywords
drip
cup
wall
emitter
shaped body
Prior art date
1978-09-07
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Granted

Application number
GB7931107A
Other versions

GB2031254B
(en

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

LEGO LEMELSTRICH Ltd

Original Assignee
LEGO LEMELSTRICH Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1978-09-07
Filing date
1979-09-07
Publication date
1980-04-23

1979-09-07
Application filed by LEGO LEMELSTRICH Ltd
filed
Critical
LEGO LEMELSTRICH Ltd

1980-04-23
Publication of GB2031254A
publication
Critical
patent/GB2031254A/en

1982-10-27
Application granted
granted
Critical

1982-10-27
Publication of GB2031254B
publication
Critical
patent/GB2031254B/en

Status
Expired
legal-status
Critical
Current

Links

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Classifications

A—HUMAN NECESSITIES

A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING

A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING

A01G25/00—Watering gardens, fields, sports grounds or the like

A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation

A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers

Description

1
GB 2 031 254 A 1
SPECIFICATION
Drip or trickle emitter for irrigation purposes
The present invention relates to a drip emitter for irrigation purposes. More particularly the 5 invention concerns the improvement of an emitter produced by present applicants.
There is known a drip and trickle emitter which outwardly is of pill-box shape and which is composed of at least three parts. A first outer cup-10 shaped rigid-walled housing part and an equally cup-shaped rigid-walled second part, and a third disc shaped part which on both sides thereof carries a labyrinthine groove. The two grooves intercommunicate, there is an inlet spigot on one 15 of the two cup shaped parts and an outlet on the other cup shaped parts.
The tortuous path reduces the speed of flow and the bows and bends which the flow has to follow result in a reduction of pressure and thus in 20 a practically pressureless emission in the form of a slow trickle or dropwise.
This known drip emitter has a number of drawbacks which we try to eliminate by our present construction.
25 The fact that three parts have to be mounted together to form the final drip emitting device does not facilitate the manual work of the assembling labourers. Further, the provision of the labyrinth on the two faces of a disc — in practice a 30 membrane of yielding material — detracts from • the necessary tightness of the flow path.
A great number of experiments and practical tests have led us to the design of a drip or trickle emitter which is based on the main features of the 35 said known emitter, which, however, is of a specific design which according to field tests ensures an especially good performance.
It is thus desirable to provide drip or trickle emitter for irrigation purposes which is of superior 40 performance as compared with known designs and which can be manufactured at low cost and thus can be supplied to the ultimate buyer and user at a price which makes the device practically expendable. This is of advantage in all those 45 situations and locations where due to impurity of water or strange bodies in the latter, there is a likelihood of stoppage, due to clogging of the flow path in the emitter.
While some earlier forms of irrigation apparatus 50 are mainly intended for “in line” use, the present design is exclusively of the “on line” type.
According to the invention there is provided a device of outwardly pill-pox like appearance, the said device consisting of a first and outer 55 cylindrical cup shaped body and a second inner equally cup shaped body, the second cup shaped body being designed, shaped and dimensioned to be force-fittable into the first cup shaped body, the open sides of the two cup shaped bodies facing 60 opposite directions, oneof the bodies having in its wall a tortuous, continuous groove ascribing multiple bows and bends and forming with the wall of the other body a flow path, an inlet into the assembled unit being provided and an outlet therefrom.
According to a preferred practical embodiment, the inner wall of the outer cup forms a truncated conical space of slight conicity.
According to another preferred embodiment of the new device there is provided in the centre of one of the cups an inlet which takes the shape of a pointed spigot which is adapted to be pushed ‘into an aperture of a hose.
According to another feature, the outer cup has a circular groove in the inner side of its top (or bottom) wall into which groove the edge of the inner cup can enter.
An embodiment of the invention will now be described with reference to the annexed drawing in which Fig. 1 shows the new device partly in section and partly in elevation.
Fig. 2 is a fractional, elevational section of the new device, and Fig. 3 illustrates the device in position of use.
The new device comprises an outer cylindrical, inverted cup 1 (seen in Fig. 1 in axial section), e.g. of substantially rigid-walled construction. In the top wall of cup 1 is provided a circular groove 2. The inner cavity of the outer cup shaped part 1 is of slightly conical shape, i.e. forms a truncated cone. Of course, the conicity is minimal and can hardly be discerned without measuring it with precise measuring instruments. However, this feature results in a tight fit of the inner in/the outer cup shaped part and in fully flow-insulating the flow parts within the drip emitter.
Into cup 1 is force fitted a second, inner cup 3 (e.g. of substantially rigid-walled construction) in the outer wall of which extends a continuous groove 4. (The Inner cup 2 is shown in elevation).
As can be seen, its edge is received in the groove 2. The cup 3 fits tightly into cup 1 and the smooth inner wall of cup 1 seals the groove 4 at its open side. From the bottom of cup 2 extends a spigot 5 having a cone shaped head 6 forming a shoulder 7. In the head 7 there is provided an opening leading into a bore 8 which in turn leads into the interior of cup 3. At the top of cup 3, i.e. its open side, at 9 the groove 4 commences, extending continuously on the wall of the cup 3 to an outlet 10.
In use of the new trickle or drip emitter the head 6 is forced into a hole made in a rubber or plastic hose H (Fig. 3). The elastic material of the hose applies itself to the shoulder 7, ensuring a tight passage from the hose to the emitter.
Water enters the spigot and rises into the interior of the inner cup 3. It flows out of the latter at 9 and travels all along the groove 4 to the outlet 10 from which it leaves in the form of a slow trickle or dropwise.
Certain variations would be within the scope of the invention. The spigot 5 could be positioned on the top of cup 1. The groove 4 need not be in the wall of cup 3, but in that of wall 1.
It has been found that the new device can be made in very small dimension, say being of a diameter of 10 mm and a height of 10 mm.
Accordingly, it can be supplied at low cost and
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125
2
GB 2 031 254 A 2
is expendable when clogged by dirt.
The conicity imparted to the inner cavity of the outer cup ensures a tight fit of the second cup in the first cup, fully sealing the groove, without 5 employing any packing or tightening means.
The advantage of the new drip emitter are thus in its simple constructions permitting quick and simple steps of assembly, i.e. just forcing one cup into the other, no matter what the relative 10 rotational position of the two cups is.

Claims (7)

1. A drip or trickle emitter of outwardly pill-box like appearance, the said device consisting of a first and outer cylindrical cup shaped body and a 15 second inner cup shaped body, the second cup shaped body being designed, shaped and dimensioned to be force-fittable into the first cup shaped body, the open sides of the two cup shaped bodies facing opposite directions, one of 20 the bodies having in its wall a tortuous,
continuous groove ascribing multiple bows and bends and forming with the wall of the other body a flow path, an inlet into the assembled unit being provided and an outlet therefrom.
25

2. A drip or trickle emitter as claimed in Claim 1, characterised thereby that the said continuous, tortuous groove is provided in the outer wall of the second, inner cup shaped body.

3. A drip or trickle emitter as claimed in Claim 1
30 and 2, characterised thereby that the inner wall of the outer cup forms a truncated conical space of slight conicity.

4. A drip or trickle emitter as claimed in Claim 1, characterised thereby that there is provided in
35 the centre of one of the cups an inlet which takes the shape of a pointed spigot which is adapted to’ be pushed into an aperture in the wall of a hose.

5. A drip or trickle emitter as claimed in Claim 4, characterised thereby that the said spigot is
40 provided on the inner cup shaped body.

6. A drip or trickle emitter as claimed in Claim 1, characterised thereby that the outer cup has a circular groove in the inner side of its top wall into which groove the edge of the inner cup can enter.
45

7. A drip or trickle emitter substantially as herein described with reference to and/or as shown in the accompanying drawings.
Printed for Her Majesty’s Stationery Office by the Courier Press, Leamington Spa, 1980. Published by the Patent Office, 25 Southampton Buildings, London, WC2A 1 AY, from which copies may be obtained.

GB7931107A
1978-09-07
1979-09-07
Drip or trickle emitter for irrigation purposes

Expired

GB2031254B
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

IL7855533A

IL55533A0
(en)

1978-09-07
1978-09-07
Improved drip emitter

Publications (2)

Publication Number
Publication Date

GB2031254A
true

GB2031254A
(en)

1980-04-23

GB2031254B

GB2031254B
(en)

1982-10-27

Family
ID=11050553
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB7931107A
Expired

GB2031254B
(en)

1978-09-07
1979-09-07
Drip or trickle emitter for irrigation purposes

Country Status (9)

Country
Link

US
(1)

US4281798A
(en)

JP
(1)

JPS5545399A
(en)

AU
(1)

AU5081679A
(en)

ES
(1)

ES251747Y
(en)

FR
(1)

FR2435287A1
(en)

GB
(1)

GB2031254B
(en)

GR
(1)

GR73528B
(en)

IL
(1)

IL55533A0
(en)

ZA
(1)

ZA794712B
(en)

Families Citing this family (33)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4392616A
(en)

1981-04-06
1983-07-12
Olson Donald O
Self-perforating drip irrigation device

US4722481A
(en)

1986-05-05
1988-02-02
Jack Lemkin
Adjustable drip emitter

US5200132A
(en)

1987-03-31
1993-04-06
Plastro Gvat
Method and an apparatus for producing a drip-irrigation emitter

IL82072A
(en)

1987-03-31
1992-01-15
Plastro Gvat
Method and apparatus for producing a drip-irrigation emitter

US4850531A
(en)

1988-02-01
1989-07-25
James Hardie Irrigation, Inc.
Drip emitter

IL99281A
(en)

1991-08-22
1998-04-05
Naan Irrigation Systems
Irrigation device

US20040173623A1
(en)

2003-03-07
2004-09-09
Yuen Yat Keung William
Flow restrictor, a cap with such a flow restrictor, and a drinking cup with such a cap

CN100333637C
(en)

2004-12-15
2007-08-29
华中科技大学
Circular streaming water irrigator

US7648085B2
(en)

2006-02-22
2010-01-19
Rain Bird Corporation
Drip emitter

EP2005049B1
(en)

2006-04-09
2016-04-06
Netafim Ltd.
Drippers and pipe couplers

US9877440B2
(en)

2012-03-26
2018-01-30
Rain Bird Corporation
Elastomeric emitter and methods relating to same

US9485923B2
(en)

2012-03-26
2016-11-08
Rain Bird Corporation
Elastomeric emitter and methods relating to same

US10440903B2
(en)

2012-03-26
2019-10-15
Rain Bird Corporation
Drip line emitter and methods relating to same

US20130248622A1
(en)

2012-03-26
2013-09-26
Jae Yung Kim
Drip line and emitter and methods relating to same

US9872444B2
(en)

2013-03-15
2018-01-23
Rain Bird Corporation
Drip emitter

US9258949B2
(en)

2013-06-19
2016-02-16
National Diversified Sales, Inc.
Adjustable drip emitter

US9949448B2
(en)

2015-01-14
2018-04-24
Amirim Products Development & Patents Ltd.
Modular in line button drip emitter system

US9462760B2
(en)

2013-07-09
2016-10-11
Amirim Products Development & Patents Ltd.
In line button drip emitter

US10869434B2
(en)

2013-07-09
2020-12-22
Amirim Products Development & Patents Ltd.
Elliptical in line button dripper with extended bonding zones

US10285342B2
(en)

2013-08-12
2019-05-14
Rain Bird Corporation
Elastomeric emitter and methods relating to same

USD811179S1
(en)

2013-08-12
2018-02-27
Rain Bird Corporation
Emitter part

US10631473B2
(en)

2013-08-12
2020-04-28
Rain Bird Corporation
Elastomeric emitter and methods relating to same

JP6339338B2
(en)

2013-08-26
2018-06-06
株式会社エンプラス

Dripper and drip irrigation tube

US9883640B2
(en)

2013-10-22
2018-02-06
Rain Bird Corporation
Methods and apparatus for transporting elastomeric emitters and/or manufacturing drip lines

US10330559B2
(en)

2014-09-11
2019-06-25
Rain Bird Corporation
Methods and apparatus for checking emitter bonds in an irrigation drip line

CN105359932A
(en)

2015-08-28
2016-03-02
大禹节水（天津）有限公司
Emitter channel structure

CN107258475A
(en)

2016-04-07
2017-10-20
阿米尔·科恩
Embedded button drip emitter

US10375904B2
(en)

2016-07-18
2019-08-13
Rain Bird Corporation
Emitter locating system and related methods

US11051466B2
(en)

2017-01-27
2021-07-06
Rain Bird Corporation
Pressure compensation members, emitters, drip line and methods relating to same

US10626998B2
(en)

2017-05-15
2020-04-21
Rain Bird Corporation
Drip emitter with check valve

KR101962256B1
(en)

2017-08-28
2019-03-26
주식회사 남경
Drip emitter

USD883048S1
(en)

2017-12-12
2020-05-05
Rain Bird Corporation
Emitter part

US20190204745A1
(en)

2018-01-04
2019-07-04
Eastman Kodak Company
Reduced flow rate processing system for flexographic printing plates

Family Cites Families (5)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3729142A
(en)

1970-12-03
1973-04-24
Diaz J Leal
Drippers for irrigation

ES402875A1
(en)

1971-05-23
1975-05-16
Standards Inst Israel
Trickle irrigation unit

US3834628A
(en)

1972-04-25
1974-09-10
H Selman
Trickle irrigation device

IL44502A
(en)

1974-03-26
1979-10-31
Lego Lemelstrich Ltd
Flow restrictor for irrigation systems

US4121771A
(en)

1977-01-17
1978-10-24
Hendrickson Ralph L
Drip irrigation emitter

1978

1978-09-07
IL
IL7855533A
patent/IL55533A0/en
unknown

1979

1979-09-06
ZA
ZA00794712A
patent/ZA794712B/en
unknown

1979-09-06
ES
ES1979251747U
patent/ES251747Y/en
not_active
Expired

1979-09-06
JP
JP11469879A
patent/JPS5545399A/en
active
Pending

1979-09-06
GR
GR59984A
patent/GR73528B/el
unknown

1979-09-07
FR
FR7922417A
patent/FR2435287A1/en
active
Granted

1979-09-07
US
US06/073,313
patent/US4281798A/en
not_active
Expired – Lifetime

1979-09-07
GB
GB7931107A
patent/GB2031254B/en
not_active
Expired

1979-09-13
AU
AU50816/79A
patent/AU5081679A/en
not_active
Abandoned

Also Published As

Publication number
Publication date

FR2435287B1
(en)

1984-12-14

JPS5545399A
(en)

1980-03-31

ES251747U
(en)

1980-10-01

GB2031254B
(en)

1982-10-27

GR73528B
(en)

1984-03-12

ES251747Y
(en)

1981-03-16

IL55533A0
(en)

1978-12-17

AU5081679A
(en)

1980-03-13

FR2435287A1
(en)

1980-04-04

US4281798A
(en)

1981-08-04

ZA794712B
(en)

1980-09-24

Contact information